GP Magnet strokes

Magnet selected Grease pencil points to lines on other layers

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Description

This was made for magneting fill strokes (in dedicated color layer) on line strokes living on other layers.

Operators

Source scope:

Paint mode : last stroke only
Edit mode : Selected points (only on active layer, you can select stroke on other layers)

Panel in sidebar : 3D view > sidebar ('N') > Gpencil

Magnet : Perform operation once with current settings on all selection

Magnet Brush : Launch a modal allowing to sculpt

Shortcut available during brush modal :
F : resize brush
shift + F : resize magnet influence
M : switch between line and point magnet

Options

Near Layers Targets : Magnet on lines from X layers above (or below if negative), 0 means all (disable the filter)
hint: to check all top layers use big value so it counts all the above

Materials Targets : Filter lines by material names in field separated by a ',' (case insensitive)
To target all lines, just leave the field empty.

Magnet on selection : Target only selected stroke (improve performance a lot as only selection is avluated)

Snap on point (switch during modal with M) : Magnet on points instead of lines (faster)

Display Position : Overlay to show actual point position (pre-snap computation) to see what to "sculpt"

Notes

Magnet is limited to stroke visible on screen for performance.
If the magnet is very slow, try zooming on the area you need to snap on.
All filters are cumulative
The magnet snapping happen in 2D screen space but change the depth of your moving stroke.
It perform an auto reprojection at the end of the edit according to your current GP projection settings.

For productivity you can add a shortcut to these operators with left click over the button > Add shortcut

Changelog:

2.0.1:

UI: changed panel name
doc: youtube link

2.0.0:

performance: deleted old sticky condition from V1
feat: new filter to target only target nearby upper or lower layers
UI: choice to display the point
code: cleanup
doc: big readme update

1.9.0:

feat: new operator to magnet once without modal control
UI: better arrangement
fix: bug when resizing brush

1.8.0:

feat: Option to display ghost points (draw virtual point position on screen)
feat: brush resize:
- resize brush with F
- resize magnet influence with shift + F
code: refactor
UX: exposing only brush magnet, not global magnet

1.7.0

performance: only target strokes visible on screen
fix: big bug on basic magnet pen drag introduced in last version
display radius of magnet proximity on mouse (though it's a radius that center should be "per points")
fix: pen radius display

1.6.0

Change: move global magnet by clicking, (Better global magnet control than previous "grab")

1.5.0:

Better brush behavior: modify only brushed points instead of magnetize whole selection
Better sculpt brush feel: drag point instead of stick, basic linear falloff)
key: pressing M toggle point/line magnet during the modal

1.4.0:

feat: new brush magnet mode

1.3.0:

feat: work directly on last stroke in paint mode

1.2.1:

fix: view plane normal projection in VIEW orientation mode

1.2.0:

Cleanup : Overlapping output points doubles deleted
Point magnet mode: snap directly on points instead of lines, added as an option, off by default

1.1.0:

Correct end points depth (raycast on chosen drawing plane)
handle distance: Proximity magnet with tolerance value
lock magneted points with Ctrl (while moving)

1.0.0:

Expose filter (multiple filtering type)

0.2.0:

Working version with optional plain material name filter

b4zz4 / GP_magnet_strokes